Laser Hardening

 

Advantages

  • Savings of time and manufacturing costs of between 20 and 25% by means of the selective hardening of areas of interest.
  • It is possible to laser harden after the parts have been machined to their final dimensions.
  • Reduction or suppression of re-machining processes on hard materials and finishing operations.
  • Deformations and the possibility of hardening cracks are minimised.- Surface hardening of parts after bulk heat treatment (quenching and tempering), increasing the hardness of the layer treated
  • Clean process, no coolants are required.
  • Absence of corrosion on the part.

Matriz

Fields of application

  • Surface hardening of large unitary parts or specific parts of the latter.
  • Surface hardening of removable elements of the abovementioned parts (for example, inserts)
  • Suface hardening of large series of medium or small size parts that require partial or total surface hardening.
  • Hardening of the majority of steels and iron castings is possible.

Characteristics of the process

  • Important reduction of the amount of heat input regarding other techniques .
  • Contributions of localised heat only on the area to be hardened .
  • Sweep of the laser beam, contribution of highly concentrated energy.
  • The laser beam can harden up to 30 mm of strip width per pass.
  • Rapid cooling of the surface to be hardened.
  • Base material -the rest of the part- remain unaffected.
  • The areas to be treated can be localised or either the entire perimeter of the part can bi also treated.
  • High air-cooling speed of the treated area.
  • No contact of any elements of the system with the part to be treated.
  • It enables the hardening of the high demanding edges (wear) of the part (for example, in dies, matrices or moulds).
  • Depth of the treated layer of up to 1.5 mm.
  • Areas of the part of difficult access for treatment with other techniques, may be hardened by laser, due to the combination of movements of the equipment and the long distances between the focusing head and the areas to be treated.
  • The hardening process is carried out in an automated manner, by means of a CAD-CAM system capable of generating appropriate paths, obtaining therefore an accurate, repetitive and reliable hardening treatment.

Cuchilla temple laser

WATCH LASER HARDENING VIDEO

 

Other Technical Hardening Information (.pdf)

Applications